Perfect wall hanging planter.  Prints without supports.  3 wall layers.  Two piece design has a wall bracket that screws to your wall and allows the pot to slide on and off the wall mount for maintenance of the plant.  about 15 cm diameter and I scaled to about 13.5 cm tall.  Top opening is about 13 cm.    I designed it in OnShape CAD an it is public under name Wall Planter awesome.